blustealer | ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f

Analysis

max time kernel
30s
max time network
32s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
08-06-2023 07:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

tmpjkdueik4.exe
Size

57KB
MD5

f40a160dfddf79de154ad448c33c2e45
SHA1

6edf15758a6618a0e357cf220225c54c10f4fc9f
SHA256

ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f
SHA512

b3f3e333995c946f8902915919da0a0e01866c75f3df577b0706734a65dff783398c2a33876b5b07d8267f5b48eabb3bd1e31ef37ab49f4bf5322c3a0847b503
SSDEEP

1536:UwlxZCBDfbP7W71uMVV1GMeaDySRImGzaref9uT:UwlxZQfbP7WbV1xeuySRIm4ayf9uT

Score

10^/10

blustealer persistence stealer

Malware Config

Extracted

Family

blustealer

Credentials

Protocol: smtp
Host:
mail.dphe.gov.bd
Port:
587
Username:
[email protected]
Password:
@DphE20#

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

Executes dropped EXE 1 IoCs

pid	Process
1560	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
1540	cmd.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	tmpjkdueik4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1560 set thread context of 1668	1560	svchost.exe	62

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2032	1668	WerFault.exe	62

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1408	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
564	timeout.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
1924	tmpjkdueik4.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe
1560	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	tmpjkdueik4.exe
Token: SeDebugPrivilege	1560	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 1012	1924	tmpjkdueik4.exe	26
PID 1924 wrote to memory of 1012	1924	tmpjkdueik4.exe	26
PID 1924 wrote to memory of 1012	1924	tmpjkdueik4.exe	26
PID 1924 wrote to memory of 1540	1924	tmpjkdueik4.exe	28
PID 1924 wrote to memory of 1540	1924	tmpjkdueik4.exe	28
PID 1924 wrote to memory of 1540	1924	tmpjkdueik4.exe	28
PID 1540 wrote to memory of 564	1540	cmd.exe	30
PID 1540 wrote to memory of 564	1540	cmd.exe	30
PID 1540 wrote to memory of 564	1540	cmd.exe	30
PID 1012 wrote to memory of 1408	1012	cmd.exe	31
PID 1012 wrote to memory of 1408	1012	cmd.exe	31
PID 1012 wrote to memory of 1408	1012	cmd.exe	31
PID 1540 wrote to memory of 1560	1540	cmd.exe	32
PID 1540 wrote to memory of 1560	1540	cmd.exe	32
PID 1540 wrote to memory of 1560	1540	cmd.exe	32
PID 1560 wrote to memory of 900	1560	svchost.exe	33
PID 1560 wrote to memory of 900	1560	svchost.exe	33
PID 1560 wrote to memory of 900	1560	svchost.exe	33
PID 1560 wrote to memory of 792	1560	svchost.exe	34
PID 1560 wrote to memory of 792	1560	svchost.exe	34
PID 1560 wrote to memory of 792	1560	svchost.exe	34
PID 1560 wrote to memory of 1320	1560	svchost.exe	35
PID 1560 wrote to memory of 1320	1560	svchost.exe	35
PID 1560 wrote to memory of 1320	1560	svchost.exe	35
PID 1560 wrote to memory of 844	1560	svchost.exe	36
PID 1560 wrote to memory of 844	1560	svchost.exe	36
PID 1560 wrote to memory of 844	1560	svchost.exe	36
PID 1560 wrote to memory of 844	1560	svchost.exe	36
PID 1560 wrote to memory of 1740	1560	svchost.exe	37
PID 1560 wrote to memory of 1740	1560	svchost.exe	37
PID 1560 wrote to memory of 1740	1560	svchost.exe	37
PID 1560 wrote to memory of 1516	1560	svchost.exe	38
PID 1560 wrote to memory of 1516	1560	svchost.exe	38
PID 1560 wrote to memory of 1516	1560	svchost.exe	38
PID 1560 wrote to memory of 1312	1560	svchost.exe	39
PID 1560 wrote to memory of 1312	1560	svchost.exe	39
PID 1560 wrote to memory of 1312	1560	svchost.exe	39
PID 1560 wrote to memory of 532	1560	svchost.exe	40
PID 1560 wrote to memory of 532	1560	svchost.exe	40
PID 1560 wrote to memory of 532	1560	svchost.exe	40
PID 1560 wrote to memory of 2044	1560	svchost.exe	41
PID 1560 wrote to memory of 2044	1560	svchost.exe	41
PID 1560 wrote to memory of 2044	1560	svchost.exe	41
PID 1560 wrote to memory of 1044	1560	svchost.exe	42
PID 1560 wrote to memory of 1044	1560	svchost.exe	42
PID 1560 wrote to memory of 1044	1560	svchost.exe	42
PID 1560 wrote to memory of 1868	1560	svchost.exe	43
PID 1560 wrote to memory of 1868	1560	svchost.exe	43
PID 1560 wrote to memory of 1868	1560	svchost.exe	43
PID 1560 wrote to memory of 1864	1560	svchost.exe	44
PID 1560 wrote to memory of 1864	1560	svchost.exe	44
PID 1560 wrote to memory of 1864	1560	svchost.exe	44
PID 1560 wrote to memory of 1332	1560	svchost.exe	45
PID 1560 wrote to memory of 1332	1560	svchost.exe	45
PID 1560 wrote to memory of 1332	1560	svchost.exe	45
PID 1560 wrote to memory of 1148	1560	svchost.exe	46
PID 1560 wrote to memory of 1148	1560	svchost.exe	46
PID 1560 wrote to memory of 1148	1560	svchost.exe	46
PID 1560 wrote to memory of 1820	1560	svchost.exe	47
PID 1560 wrote to memory of 1820	1560	svchost.exe	47
PID 1560 wrote to memory of 1820	1560	svchost.exe	47
PID 1560 wrote to memory of 1628	1560	svchost.exe	48
PID 1560 wrote to memory of 1628	1560	svchost.exe	48
PID 1560 wrote to memory of 1628	1560	svchost.exe	48

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\tmpjkdueik4.exe
"C:\Users\Admin\AppData\Local\Temp\tmpjkdueik4.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1012
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:1408
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp8ED8.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1540
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:564
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1560
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe"
      4⤵
      PID:900
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"
      4⤵
      PID:792
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_wp.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_wp.exe"
      4⤵
      PID:1320
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\jsc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\jsc.exe"
      4⤵
      PID:844
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegSvcs.exe"
      4⤵
      PID:1740
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regsql.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regsql.exe"
      4⤵
      PID:1516
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe"
      4⤵
      PID:1312
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exe"
      4⤵
      PID:532
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SMSvcHost.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SMSvcHost.exe"
      4⤵
      PID:2044
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe"
      4⤵
      PID:1044
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\DataSvcUtil.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\DataSvcUtil.exe"
      4⤵
      PID:1868
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ComSvcConfig.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ComSvcConfig.exe"
      4⤵
      PID:1864
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe"
      4⤵
      PID:1332
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess.exe"
      4⤵
      PID:1148
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe"
      4⤵
      PID:1820
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:1628
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\regtlibv12.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\regtlibv12.exe"
      4⤵
      PID:320
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe"
      4⤵
      PID:1592
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\dfsvc.exe"
      4⤵
      PID:868
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regbrowsers.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regbrowsers.exe"
      4⤵
      PID:1828
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_state.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_state.exe"
      4⤵
      PID:1104
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\CasPol.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\CasPol.exe"
      4⤵
      PID:960
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe"
      4⤵
      PID:1992
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInUtil.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInUtil.exe"
      4⤵
      PID:1196
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe"
      4⤵
      PID:1240
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ilasm.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ilasm.exe"
      4⤵
      PID:672
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe"
      4⤵
      PID:648
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe"
      4⤵
      PID:1884
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\EdmGen.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\EdmGen.exe"
      4⤵
      PID:1880
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SetupCache\v4.7.03062\Setup.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SetupCache\v4.7.03062\Setup.exe"
      4⤵
      PID:1668
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1668 -s 304
        5⤵
        Program crash
        
        PID:2032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8ED8.tmp.bat

Filesize
151B

MD5
420d150d7958828b860fca71276acb4d

SHA1
6c0805344cd669099bf8dab29ff2f0386f74efbc

SHA256
77fe99e8121f1bd74e4030c00797dbd9b57b2fc68261b76a618bc9cd358897e7

SHA512
8eba7cf5a9a7c57ab543be2e269d347a884d4b400610cf86571ea2fdac398eba2460edb2ce4611dc768375e33d5ad4b5df327a2fe33658c4efc47b04216b8967

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8ED8.tmp.bat

Filesize
151B

MD5
420d150d7958828b860fca71276acb4d

SHA1
6c0805344cd669099bf8dab29ff2f0386f74efbc

SHA256
77fe99e8121f1bd74e4030c00797dbd9b57b2fc68261b76a618bc9cd358897e7

SHA512
8eba7cf5a9a7c57ab543be2e269d347a884d4b400610cf86571ea2fdac398eba2460edb2ce4611dc768375e33d5ad4b5df327a2fe33658c4efc47b04216b8967

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
57KB

MD5
f40a160dfddf79de154ad448c33c2e45

SHA1
6edf15758a6618a0e357cf220225c54c10f4fc9f

SHA256
ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f

SHA512
b3f3e333995c946f8902915919da0a0e01866c75f3df577b0706734a65dff783398c2a33876b5b07d8267f5b48eabb3bd1e31ef37ab49f4bf5322c3a0847b503

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
57KB

MD5
f40a160dfddf79de154ad448c33c2e45

SHA1
6edf15758a6618a0e357cf220225c54c10f4fc9f

SHA256
ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f

SHA512
b3f3e333995c946f8902915919da0a0e01866c75f3df577b0706734a65dff783398c2a33876b5b07d8267f5b48eabb3bd1e31ef37ab49f4bf5322c3a0847b503

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe

Filesize
57KB

MD5
f40a160dfddf79de154ad448c33c2e45

SHA1
6edf15758a6618a0e357cf220225c54c10f4fc9f

SHA256
ca43187a938211fe07ce02306e744c6c41b10fb12129d5e9b3c083a23541066f

SHA512
b3f3e333995c946f8902915919da0a0e01866c75f3df577b0706734a65dff783398c2a33876b5b07d8267f5b48eabb3bd1e31ef37ab49f4bf5322c3a0847b503

Download Submit
memory/1560-70-0x0000000000380000-0x0000000000392000-memory.dmp

Filesize
72KB

Download
memory/1560-71-0x000000001B150000-0x000000001B1D0000-memory.dmp

Filesize
512KB

Download
memory/1668-72-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1924-54-0x00000000011C0000-0x00000000011D2000-memory.dmp

Filesize
72KB

Download
memory/1924-55-0x000000001A8C0000-0x000000001A940000-memory.dmp

Filesize
512KB

Download
memory/1924-56-0x000000001B2A0000-0x000000001B352000-memory.dmp

Filesize
712KB

Download